Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It does disclose the meaningful behavioral fact that this is a paid tool ($0.02 USDC), which is non-obvious and actionable. However, it says nothing about return format, determinism, or failure behavior, leaving a gap for an un-annotated tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

A single compact sentence with the cost front-loaded and the capability immediately after. No wasted words, though it is on the terse side for a paid analysis tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema, but the description implies the return content (extracted operational obligations) and the pricing model, and the payment handshake is covered by the schema. Only the shape/granularity of the extracted obligations remains unspecified, which is a minor gap.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3. The description adds no parameter-level detail beyond what the schema already documents (text, title, counterparty, paymentSignature and its challenge/retry flow).

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

Specific verb ('extracts') plus resource ('operational obligations') and an enumeration of the covered categories (reporting, security, SLA, audit, insurance). This distinguishes it from the other extract_* siblings (payment terms, employment terms, renewal deadline), so an agent can route without opening schemas.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No statement of when to use this versus alternatives such as extract_payment_terms or check_nda_clauses, and no prerequisites beyond the pricing mention. Usage must be inferred from the tool name and obligation category list.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.